500 x 0.84 = 420 percent. I hope this helps because I am only in year seven.
500 - 17% = 415
500 - 13% = 87% of 500 = 500*87/100 = 435
1.6% is the same as 0.016 and 0.016*500 = 8
It is X*0.21 - 16
6.4
It is: 600-96 = 504
75% decrease.
(80/500)/5 (because 500 is 5x100) = 16/100, or 16%.
20% of 80 is 16 and 80-16= 64
20% = 1/54 + 4 + 4 + 4 + 4 = 2020 decreased by 20% is 16, therefore the answer is 20
20
16% = 16/100 = 0.16 400 x 0.16 = 64 400 - 64 = 336